Toyota Corolla Cross: Indicator (Red) Circuit Short to Ground (B157011,B157013)
DESCRIPTION
This DTC is stored when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch.
The manual (SOS) switch red indicator illuminates for 2 seconds and goes off when the ignition switch is turned to ON. If a malfunction in the safety connect system is detected, the manual (SOS) switch red indicator will illuminate.
However, the manual (SOS) switch red indicator may not illuminate when this DTC is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B157011 |
Indicator (Red) Circuit Short to Ground |
Manual (SOS) switch red indicator impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON |
|
|
B157013 |
Indicator (Red) Circuit Open |
Manual (SOS) switch red indicator impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.
Click here .gif)
HINT:
If DTC B157011 or B157013 is stored, the manual (SOS) switch red indicator may not illuminate when another DTC is stored.
PROCEDURE
|
1. |
CHECK DTC |
(a) Turn the ignition switch to ON and wait for 10 seconds or more.
(b) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs(c) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble CodesOK:
No DTCs are output.
| OK | .gif)
|
USE SIMULATION METHOD TO CHECK |
|
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|
2. |
INSPECT MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH) (RED INDICATOR) |
|
(a) Remove the map light assembly (manual [SOS] switch). Click here |
|
(b) Connect 2 dry-cell batteries (1.5 V each) in series.
(c) Connect a positive (+) lead from the batteries to terminal 6 (IND1) and a negative (-) lead to terminal 8 (GND3) of the map light assembly (manual [SOS] switch) connector.
(d) Check if the manual (SOS) switch red indicator illuminates.
OK:
Manual (SOS) switch red indicator illuminates.
| NG |
|
REPLACE MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (DCM [TELEMATICS TRANSCEIVER] - MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH)) |
(a) Disconnect the I200 DCM (telematics transceiver) connector.
(b) Disconnect the T6 map light assembly (manual [SOS] switch) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I200-4 (IND1) - T6-6 (IND1) |
Always |
Below 1 Ω |
|
I200-4 (IND1) or T6-6 (IND1) - Body ground |
Always |
10 kΩ or higher |
|
I200-3 (SIG-) - T6-8 (GND3) |
Always |
Below 1 Ω |
|
I200-3 (SIG-) or T6-8 (GND3) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) with a new one.
Click here
NOTICE:
- The ignition switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT |
|
PERFORM DCM ACTIVATION |
READ NEXT:
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Check Bus 2 Line
DESCRIPTION
Symptom
Trouble Area
There are ECUs or sensors that display a communication stop on the bus
diagnostic screen. Or, there are ECUs or sensors that display communication
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CAN main
VEHICLE CONTROL HISTORY (RoB)
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(a) Check the vehicle control history (RoB). Powertrain > Hybrid Control > Utility
Tester Display
Vehicle Control History (RoB)
Code Tester Display
Measurement Item Dia
